Panayırcı, ErdalPanayırcı, ErdalDogan, HakanCirpan, Hakan AliKocian, AlexanderFleury, Bernard Henri2019-06-282019-06-28201091874-49071874-4907https://hdl.handle.net/20.500.12469/1572https://doi.org/10.1016/j.phycom.2009.06.001This paper is concerned with joint multiuser detection and multichannel estimation (JDE) for uplink multicarrier code-division multiple-access (MC-CDMA) systems in the presence of frequency selective channels. The detection and estimation implemented at the receiver are based on a version of the expectation maximization (EM) algorithm and the space-alternating generalized expectation-maximization (SAGE) which are very suitable for multicarrier signal formats. The EM-JDE receiver updates the data bit sequences in parallel while the SAGE-JDE receiver reestimates them successively. The channel parameters are updated in parallel in both schemes. Application of the EM-based algorithm to the problem of iterative data detection and channel estimation leads to a receiver structure that also incorporates a partial interference cancelation. Computer simulations show that the proposed algorithms have excellent BER end estimation performance. Crown Copyright © 2009.eninfo:eu-repo/semantics/openAccessEM SAGE algorithmJoint multiuser detectionMC-CDMA SystemsMultichannel estimationArticle87962310.1016/j.phycom.2009.06.0012-s2.0-77951298914N/AQ2